Using spacecraft tanks for methane storage on Mars: feasibility and risks?
Hey everyone,
I am working on a Mars colonization project. During the process of extracting oxygen, I also end up with methane (CH4) as an output.
While having methane is a big plus, storing it is a major issue. Bringing large, dedicated gas cylinders or tanks from Earth is highly impractical due to mass and cargo constraints. My proposed solution is to store this methane directly inside the rocket's own empty tanks. I know that for modern rockets, the methane needs to be cryogenically cooled to around -165 C•, but in this situation, it seems like the best option.
I have two specific questions regarding this approach:
Import and Export: Is it technically possible to both import (load) and export (draw back) gas directly from a spacecraft's primary propellant tanks?
Feasibility: Do you see any major technical issues or better alternatives with this specific storage method?
Thanks for your insights!